Mining machine



F. CARTLIDG E May 5, 1925.

MINING MACHINE 191.5 2 Sheets-Sheet 1 Original Filed June 12 May 5, 1925. 1,536,327

F. CARTLIDGE MINING MACHINE Original Filed June 12, 191.5 2 Sheets-Sheet 2 Patented May 5, 1925.

UNITED STATES PATENT orifice.

FRANK CARTLIDGE, OF CINCINNATI, OHIO. ASSIGNOB T SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

MINING MACHINE.

Original application filed June 12, 1915, Serial No. $87,724. Divided and this application filed June 25.

' 25, 1924. Serial N01 1732,3723.

T0 all whom it may COHIQGPIL'.

Be it known that L FRANK Qm'rlanoma citizen of the United States, residing at'Qin- Y trol mas-always in condition to act to reduce jthc rate" of'feeding when the load on the cinnati. in the county of'Hamilton and state of Ohio, have invented certain new and useful Improvements in Mining M c.

chines, of which the following is a :full, clear, and exact specification.

My invention relates to min ng mach nes.

It. is an object of my invention toprovide an improved mining machine. It is afurther object of my inventiontolpipvide an improved mining anachine hav'ingf improved fceding mechanismi I-t-isanotherobject of my invention to provide'an ijmproved mining machine having improved- -e fnbodying -t heillustrative form of any 111- cent int; with it ie e te feeding mechanism by which saidniaehine may be fed at a plurality of predetermined speeds, one a cutting speed and the other a higher speed and under frictional control, at each speed. It is a still further object ofmy invention to provide an improved auto matic driving and feeding mechanism'for a 10f F 1g. 1;

cutter of any sort and particularly for a mining machine wherein the feeding of the cutter into the material l'ieing-eut is [automatically controlledby the load on the cutter sothat the speed of feeding is dependent upon and preferably varies in mverse'sense to the load on the cutter. It is a still further object to do this electrically, and b mechanism which requires but a small amount of force for its feed controlling operatitm for controlling a heavy machine, which is arranged in such a compact manner that it can he used in the very narrow space which is usually available in mining operations, which is self oil-ing and in which the driving motor when an electric motor can be either a direct or an alternating current motor, and which will prevent the nu-itor when the latter is an alternating current motor being stalled.

lu carrying out my invention connect a driving motor, which is preferahly an elc 'tl'ic motor'aud which may be either a direct current motor or an alternating current motor, by suitable mechanism to the cutter and alsoicionnect it-to a 'feed mechanism through a' variable speed commotion which in the illustrative tori-n of my invention disclosed herein includes a clutch adjustable to permit. dili'crcnt amounts of slippage and l control this clutch both autoneet-ions for the feedin matically and in accordance with the load and manually and arrange the automatic control sothatregardless of the manual couniotor exceeds a predetermined value.

' The present application is a division of 'my' cope nding application renewal Serial No. 487,724i, which was filed June 12, 11915. "In the accompanying drawings I have for purposes of illustration one form which any invention may assume in practice, the m-oportionfs varying slightly in difi'erent figures. 7 In these drawings v 1 F g-. i azp an YEW- a m ng m ine m c nism P rt y b oken we? lfigllc st fl d. o m chin j ifi l f Sw et-th p rts in ectio to show the driving mechanism,

Fig.-; %-is-a partial'seetion o l-the Fig. 4 is :a view showing the gear con- -mechanism, the view boingtakenon the {l me of 3. .Fia. 5 is. a diag am a View h wing theelectrical connections :Whenthe driving motor is an electric motor of the commutetoi'typel. f

Fig. 6 a similar diagrammatic View showing the connections when the driving .inotor :is' an alternating current motor-ofthe sqi'iirrel'cage type, r

In its illlkSti'tttlVfi {orm my invention 18 ineorporated'in a, min ng mach ne hav ng a main firame 10 which has a substantially flat bottom and which carries all the work ing parts. Power-for =c'l'ri isring and feeding is furnished. by'a single'eleetric motor 11 which rests on a;ho'rizontal shelf 12 on the main frame l0,--s 1ch shelf being spaced some distance :abo-ve theihotto n ofthe iranie to provide space for the cutter chainas l-ieneinafter apparent. O n tl1 e armature shaft of the motor 11 is a bevel piniOn which meshes with a bevel gear-M having an elongated hub 15 which is keyed to a vertical shaft 16 which .is hung itrom its upper end from an adjustable thrust hearing 17 supported in a removable .cap plate 18 and located in a pocket formed by an upstanding flange 1'9 surrounded by a cap eleyation of such amining l ne 20 which may be removed to fill such pocket with oil or other lubricant' The cap plate 18 also has a downwardly extendingflange 21 which surrounds the hub 15 and between which and said hub 15 is a bushin 22 which is kept filled with oil by an upstanding flange 23 carried by the gear 14 and surrounding the space from the flange 21. The oil from the pocket formed by the flange 19 passes down along the bearing surfaces of the bushing 22 and in order to escape must overflow the flange 23. The shaft 16 is further supported by a bushing 24 in the floor of the gear casing 25, which bushing rises a considerable distance above such floor so as to maintain such gear casing partly full of oil and by a bushing 26 mounted in the upstanding flange 27 from the'bottom of the main frame 10, the bushing 26 being closed at the bottom to enclose the lower end of the shaft 16. The bearin surfaces of the bushing 26 are lubricated y the oil which overflows from the, gear casing 25 through the bushing 24 and also byan overflow pipe 28 which opens into such gear casing about the level of thetop' of the bushing 24 and leads downward'through the floor of such gear' casing to commulnicatewith the bushing 26. For further lubrication the driving pinion 13 and oiling idler '29 may be mountedion the main-frame 10 to meshwith su h pinion and to=-dipintothe oil in the gear casing-"25.9

Below the floor of tlie gear casing-'25 but above the upper end of. the bushingi26 a pinion 30' is fixedon the-f-shaft 16. 'This' tatably mounted on the shaft and located pinion meshes with a gear 7 31 mounted on af-shaft 32, which has hearings in bushing's-{mountedfinan upstanding circular flange 33 from the'bottom' of'the main frame 10' andinan -upstanding flange 34 from the floor of the gear cas ng 25, the. flange 34 being located between some of the parts hereinafter described and overlapping therewith for economy inspacei I As shown. the lower end of the shaft'32 is also, lubr'icated from thecasing 25, a suitable passage 32' in thebott0m ofthe main-frame supplying lubricant thereto from the bushing 26 which, as shown, hasa suitable port 26 communicating with sai'd'passa'get The gear 31 carries -a driving'sprocket 35,' "for'ia cutter chain; 36, which} is mounted on such sprocket 35 and travels around-"a suitable projecting frame 37-which extends into' the vein of coal'to be cutfthe frame 37 being supported and the chain 36 being located in the space between the-sl1ell 12 and the bottom-of the main frame 10'. The cutter chain 36 has the usual cutters 38. Thus the motor 11 drives the cutter chain 36 through 'thepinion 13, gear 14, shaft 16, pinion30, gear 31 and sprocket 35.

A worm 40 is fixed on the shaft 16 be tween the floor of the gear casing 25 and The sun gear 52 is fast on a shaft 47 the gear 14. The lower end of this worm projects loosely over the upper end of the bushing 24. The worm 40 meshes with a worm gear 41 mounted on a horizontal stub or jack shaft 42. From this shaft 42 the feeding mechanism is driven. The shaft 42 carries ooaxially therewith two duplicate pinions 43, which pinions are keyed to and rotate with a member 67 hereinafter described through which member said pinions are adapted to be connected by mechanism also to be later described to the shaft 42 for rotation therewith. The pinions 43 mesh respectively with two duplicate gears 44 mounted on sleeves 45 and 46 respectively, which sleeves are coaxial with and rotatable relative to a horizontal shaft 47, the sleeve 45 fitting directly on a bushing on the shaft 47. The gears 44 are spaced apart but are connected to rotate together by bolts 48 upon each of which bolts are mounted two planet gears 49 and 50 of slightly different size, but rigid with each other so? as to rotate together. The gears 49 are shown as slightly larger than the gears 50. The planet gears 49 mesh with the sun gears 51 and planet gears 50- with the sun gear 52, the sun gear 52 being larger than the sun gear 51 to correspond t to the difference in size of the planet gears '49 and 50. By reason of the duplication of the gears 43 and pinions 44 all tendency to twist in the planet gears 49 and 50 and in'the sun gears 51 and 52 is eliminated. The sun gear 51 forms part of a' sleeve 53 roin one direct-ion'from neutral position, in

which it is free from any locking engagement, teeth 57 on one end thereof engage teeth 58 on the sleeve 46 to lock together the sleeves 46 and 53 and thus cause the "sun and planet mechanism to revolve as a unit, and when slid in the other direction from neutral position, teeth 59 on the other end engage teeth 60 on a portion 102 constituting here a part of easing member 25. It will be observed that when the member 54 "is slid to the right in Fig. 4 fast speed rotation is transmitted to the shaft 47 and -when slid to the left slow speed of rotawhich meshes with an internal gear 91 formed upon the internal periphery of a feed operating member, herein in the form of a drum member 92 rotatable upon a transverse axis disposed forwardly of the controlled by a friction controlled take-up drum 94 so that after the cutter bar has been sumped *intoa mine face the machine may be moved bodily laterally along the "face to undercut *the same "in a Well-known manner.

For the purpose of providing a frictional control for the feed operating mechanism which will be effective at either feeding speed, the fol-lowing construction :is provided. Ithas -*been noted that the pinions 43 are mounted upon *the 'member 67, :being in fact mounted upon a sleeve portion 100 thereof which -is loosely mounted on the shaft 42 and fixedzto-rthemember 67 which constitutes :a clutch casing between which and the shaft :42 is a :multiple disc clutch .73. When the 'clutch 7-3 -is set, the sleeve E199 and gears 43::rotate rwiththe shaft d2, but when the clutch 73 is released there is more or 'less. slippage between shaftAQ :and the sleeve '100, the amount 01. :such slippagedependi ng upon :the amount-:tomhich the clutch is :relased. T'he setting' of the clutch .:73 -is controlled .by a plurality of levers :101 :pivoted am the clutch casing =67 and bearing against the end disc of the multiple disc cliutch :73, said levers being opera-ted loyal sliding-sleeve Wit-mounted on the shnfta-n'd spring pressed to a *position to set the clutch '13 by :a spring 75 which surrounds the hub of the disc 'l'dund acts between such disc and the thrust :bearing 76 bearing against the gear casing The disc 74 has a peripheral flange 77 which may 'be-engaged by .a-pair of rollers 78 mounted on a forked :lever 79 which straddles the disc 74 and is .pivotally mounted on -a fixed pivot pin 80 suitably supported on the frame of the casing The lever '79 is connected to the movable core 81 of a solenoid '82 whose electrical connections will shortly be described. Manual means may be provided and are herein shown for releasing clutch 73 and for controlling the degree of loading thereof manually. As shown, one or more rollers 103 are carried by a slidable member 104 which is screw threaded and provided with a nut, loo-which cooper-ates with the casing 25 to slide the member 104. The

rollers cooperate with the flange 77 of the disc 74 to shift such disc against the spring 75 to release the clutch 73. Manipulation of the manually controlled nut 105, how- :ever, cannot cause an excessive load on the (lXlVPIlg motor 11 because 'the rollers 78 are always in readiness for operation by the solenoid to release the clutch 73 whenever the load on the motor requires it.

The solenoid 82 is connected in series with the motor 11 across any suitable supply circuit 85 through any suitable switch 86 and controlling device 8 7. The motor 11 is shown in Fig. 5 as a compound wound motor of the commutator type and in Fig. 6

as an induction motor of the squirrel cage type. Because of the series connection of the solenoid 82 the pull of such solenoid varies directly as the load on the motor 11,

which load is in the main that due to the cutting mechanism. If desired, a switch 88 may 'be provided for shont circuiting the solenoid 82.

From what has preceded the mode of operation of this mechanism will be very clearly apparent. the sleeveo is in its midd le'position, no fieeding is obtained as the reaction gear 51'is free to rotate.

Wren the sleeve is thrown to the right to cause intermeshing of theteeth '57 and '58,

quick feeding is prevented from causing overload -on the motor by the action of bhe solenoid 82 on the clutch 73. When the sleeve 54 is thrown-to the left to cause intermeshing cit the teeth '59 and 60 the re- .action gear is positively held stationary sothat when the clutch 73 is set the-shaft 47 is driven to-operate the drum :92 at a slow winding speed'and'i'n the-same direction as rotation occurred in the other operative tightening of the clutch 73 and thus tocontrol slippage of the shaft 42 in the sleeve in accordance with the load so that. the feeding operation always maintains the load on the motorat substantially a constant value. It will be understood that when the switch 88 is closed, the friction clutch 73 may be loaded to any extent within the capacity of the spring 75 by adjustment of the nut so that the mechanism will produce not only two predetermined feeding speeds, namely, a fast and a slow feeding iii) speed, but also a plurality of fractional speeds obtained by allowing more or less slipping of the friction clutch. It will be understood that by properly reeving the flexible feeding member (not shown) which is wound upon the drum member 92 in such a direction as to be drawn in when the motor rotates in a direction to drive the cutter chain 36 counterclockwise in its orbit as viewed from above, it is possible to cause the machine to move in such a manner relative to the face as to sump the bar under the coal and to move the entire machine transversely of a working face to effect the cutting of a kerf. It is possible, moreover, to move the machine on to and off of a truck by properly reeving the flexible feeding member, the fast speed being the more freuently used for moving the machine about t e entry or onto and off of the truck, while the slow speed is primarily the cutting speed. During the various cutting operations the brake controlled member 94 together with the flexible feeding member employed therewith may be used to control the movements of the machine as may be necessary.

While I have in this application specift cally described one'form which my invention may assume in practice, it willvbe understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in other forms" without departing from its spirit or the scope of-the appended claims. -What I claim as new and desire to secure by'Letters Patent is': i

1. A room and pillar mining machine comprising a machine frame slidable on its bottom overa mine bottom, cutting mechanism including acutter-bar projecting longitudinally therefrom, a motor for actuating said cutting mechanism, and means for feedingsaid-frame to sump said bar under the coal and thereafter to move said frame and bar laterally across a face during cutting including a pair of parallel transversely extending shafts, a feed operating member rotating on a transverse axis,

a flexible feeding member cooperating there with and adapted to extend during transverse cutting from a point adjacent the frontend of saidframe to a point in advance of said frame,'a "ear member concentric with and fixed during driving of said-feed operating member as to angular movement with respect thereto, a pinion. mounted on one of saidtransverse shafts and meshing with said gear, a second gear on said shaft, a pinion on the other of said first mentioned shafts meshing with said last mentioned gear, friction mechanism for connecting said last mentioned pinion to said shaft, and means for driving said last i mentioned shaft from said motor.

2. A room and pillar mining machine comprising a machine frame slidable on its bottom over a mine bottom, cutting mecha nism including a cutter bar projecting longitudinally therefrom, a motor for actuating said cutting mechanism, and means for feeding said frame to sump said har under the coal and thereafter to move said frame and bar laterally across a face during cutting including a pair of parallel transversely extending shafts, a rope winding drum rotating on a. transverse axis, a rope wound thereon and adapted to extend during transverse cutting from a point adjacent the front end of said frame to a point in advance of said frame, a gear member concentric with and fixed during drum driving as to angular movement with respect to said drum, a pinion journaled on one of said transverse shafts and meshing with said gear, asecond gear on said shaft, a pinion on the other of said first mentioned shafts meshing with said last mentioned gear, friction mechanism for connecting said last mentioned pinion to said shaft, and means for driving said last mentioned shaft from said motor including a worm wheel on said shaft and a worm driven by said motor.

3. A room and pillar [mining machine comprising a machine frame slidable on its bottom over a mine bottom, cutting mechanism including a cutter bar projecting-longitudinally therefrom, a motor fora'ctuating said cutting mechanism, and means for feeding said frame to sump said bar under the coal and thereafter to move said frame and bar laterally across a face during cutting including a pair of parallel transversely extending shafts, a rope Winding drum rotating on a transverse axis, a rope-wolindithereon and adapted to extend during transverse cutting from a point adjacent the front end of said frame to a point in advance ofsaid frame, a gear member concentric with and fixed during drum driving as to'l angular movement with respect to said drum, :1 pinion journaled on one of said transverse shafts and meshing with said gear, a second gear on said shaft, a pinion on the other of said first mentioned shafts meshing with said last mentioned gear, friction mechanism for connecting said last mentioned pinion 'to said shaft, and means for driving said last mentioned shaft from said motor including a worm wheel on said shaft and a worm driven by said motor and rotating on avertical axis to the rear of the latter.

4. A room and pillar mining machine.

comprising a machine frame slidable on its bottom over a mine bottom, cutting mechanism includinga cutter bar projecting longitudinally therefrom, a motor for actuating said cutting mechanism, and means for feeding said frame to sump said bar under the coal and thereafter to more said frame and bar laterally across a face during cutting nismfor connecting said,, la t. ,inentioned includingv a pair-of parallel transversely ex; tending shafts, a,rope winding drum rotat;

ing on atransverse axis, a rope wound thereon and adapted tto extend during ,,transangular movement with respect pto said drum, a pinion 1ournaled on one ofsard transverse I shafts 7 and meshing gear, a second gear; on said shaft, tam pinion. v

on, the other of said first mentioned shafts,

meshing with said last mentioned gear, friction mechanism for connecting :said

mentioned pinion to said shaft, and means for drivingsaid last mentioned shaft from said motor including arworm wheel on sa id shaft and worm driven bysa d motor and;

. rotating on a vertical axis to rear of the latter, said motor having an armature shaft. longitudinally disposed with resgect to said,

frame an id a {mention ds m ans. al o];

nc uding abeve z ipiniqei n a A. rmature; Shaft an b re g 6 a a,

v is d Warm-i :A room an p an; m n p amae comprising a machine frame sl dable gen. t m i eve -ermin bettqmae tie were? i s l ng mutter bar ie tir ee r tudinally therefrom, a motor for act'jating, said t g121 sQh e ,sin mtmqaiei r e ing aframe to summ d ba 11H}. si h coal and thereafter ,to, 1119 i H fram nd; bar atera ya ess: a fa dl ine eettin i eluding p raeitpe el as fiaaelr d -a mi s,aros .nd xl a rim-r0 tr s ns r e xist z eardi dzta e o acdadapted eeei ea laqtte it aes eiee, ti g qntap mt adjacent hii99 .da o a d 'a ne;t impar is adran teeid me a g ar:membmaoeeentriairi a rand fixed u ing um-1. sh l Insane t ii a ii nt w t tr pectrln as t dtisl mei i a; pinion .iaurnele sere e a i e atmes erfi a shafts and nes hingwith said gear a second geanon saidishaft, a pinion on ther other of said, first mentioned shafts nieshii'ig with, saidilast mentioned gear,-.;friction mecha pinion to s aid ,shaft, and. means, for, said last mentioned shaft from said motor, rotatin ,on a vertical axis to the rear ofztlre latter-.

6. A room-and p bottomover a mine bottom, cutting mechanism including a cutter, barf-projecting longitudinally therefrom,,a-motor for actuating said cutting mechanism, and means for feeding said frame to fsump said bar under the coal and thereafter to move said frame and bar laterally across a face during cutting including a pair of parallel transrcrsely extending shafts, a, rope winding drum rotating on a transverse axis, a rope the front endfof said frame to, a point in 7 verse cutting ,from; a ,point adjacent; the front endof said frameio a, point in ad- Vance of said frame, age a! membercoaxial with and fixed during ,drurn =driving,,as to;

advance of said :frame, a gear member coaxial with and fixed during drum driving as to angular movement with respect to said drum, a pinionjburrialed on one of said transverse shafts and meshing with said gear, a second gear on said shaft, a pinion on the other of saidfirst mentioned shafts meshing with said last mentioned gear, friction mechanisnr for connecting said last mentioned pinion tosaidshaft, and means for driving said last mentioned shaft from said motor including a worm wheel on said shaft and a worm driven by said motor, said motor having an armature shaft longitudinally disposed fwith respect to said frame andsaid means including a bevel pinion on said armature shaft and a bevel gear coaxial with and above said worm. .7. roonr and L pillarf mining machine comprisingaamachine}frame slidable on its bottom over a mine bo tto m cutting mechanism including a cutter bar projecting longitudinally, therefrom, a motor for. actuating said cutting mechanism, and means for;

feedingisaid,frame to-sump said bar under the eoal and vitahereaf ter, fto mofve said frame and h in,laterally across a face during cut-. ting mcluding, a pairQof vparallel trans t wrsely ,e t ndina s aft a, p Winding itmesrexs s itin i e m 1 P tadjacent tl 1e5gfronjagend 50f, said -fra ne to"- apoint in advance, of said (,frame, a, gear member:

comprising; atm achine ,frame slidable on its bottom overra mine bottom, cutting mechanism j including a'icutter bar projecting longitudinally therefrom, a motor for actuatingsaid cuttingfmechanism, and means for feeding said frame to sump said bar. under the coal and thereafter to move said frame and bar laterally across a face during cutting; including a pair of parallel transversely extending shafts. arope winding drum rotating on a transverse axis, arope ru rstati g i9 jat a s rse m P wound thereon and a dapted to extend'durlot) .in advance of said frame, .a ear member coax al with and fixed during rum driving as to angular movement "ivitl1 'i' espect to said drum, .a pinion journaled' on one of said transverse shafts and meshlng, with said gear, a second gear on said shaft, a pinion oi1 ,the otherof saidfirst mentioned shafts meshing with said 'last mentioned gear, friction mechanism for connecting said-last mentioned pinion tosaid shaft, and means for driving said last mentioned shaft from said motor including a worm wheel on said shaft and a worm driven'b y said motor, said motor. having armature shaft longitudinally disposed with, respect to said frame and said last mentioned means including a bevel wpinion on said armature shaft and a beve'l'fgear coaxial with and above said worm, and. means arranged with reference tosaid' worm at the otherside of s'ai dffriction controlledpinion for interrupt v i'dr r o ai 'f im- "9;. A1 roornand pillar mini g -maclnne c oinprising a machineframe'sli able onits bottom over'a mine bottom, cutting mechanisiiimlhding a cutter bar projecting ion.-

therefrom, a motor for actuati'ng said-cutting mechanism, and; means for feeding s'aidframe to's ump' said-bar under the coal ahdtheieziftr to move said frame an dibar laterally across a face during cuttinginoludiilg a -paiir of parallel transversey sends-sS ae-a a a n br/rotzitiiigifon a transverse axls, a flexible fiae'ding portion, cooperating therewith adapted to: extend- 'during'tr'ansverse cutting mine pointadjacent the front end of said frame '.t() a point in advance ofsaidframe, a: driving" connection between one of? said'transverse shafts and said feed;

operating member, including a gear concentricwitlr said'feed Operating member and a pinion on said shaft, a gearon said shaft, a pinion on the other of said first mentionedshafts'meshing with said last mcntioned gear, friction mechanism for connecting said pinion to said shaft, means for driving said' 'last; mentioned shaft from said motor, and-means under frictional control for regulating the motion of the machine frame includinga flexible portion extending during transverse cutting to a point behind the' machi-ne frame and a member cooperating therewith disposed further-"to the rean on saidframe than said feed operating member and rotating on a horizontal axis.

10. A room and pillar mining machine comprising a machine frame slidable on its bottom over a mine bottom, cutting mechanism including a cutter bar projecting longitudinally therefrom, a motor for actuating said'cutting mechanism, and means forfeeding said frame to sump said; bar under the coal and-thereafter to move said frame and bar laterally across a face during cutting including a pair of parallel;transversely extending shafts, a rope winding drum rotating on a transverse axis, a rope wound thereon and adapted, toextend during transverse cutting from a point adjacent the front end of said frame to a point in advance of said frame, a gear member concentric with and fixed during drum drive asto angular movement with respect -to said drum, a pinion on one of said transverse shafts and meshing with said gear, a sec 0nd gear on said shaft, a pinion on theother of said first mentioned shaftsmeshing with said last mentioned'gear, friction mechanism for connecting said, last mentioned' pinion to said shaft, means for driving said-last mentionedshaft from said motorincluding a worm wheel on said shaft'and a worm: driven by said motor, and means'unden-frjic tional control for regulating the mo'tion'of the machine frame including a second drum further to the rear of said-frame than said first mentioned drum and rotating on ahorizontal axis, and a flexible calile"wolind cutting -to a point "behind the i'rifach'i Ie' gitudinaflly therefrom, a motor for actuating said cutting mechanism, and means for feed-f ing said frame to sump saidfbai n'nderthe coal and thereafter to move said frame and' barlaterally across a face during-dotting including a pair of parallel transverselyex; tending shafts, a ropewinding drum rotat ing on a transverse axis, a rope' Wound thereon andadapted'to extend duringtrahsverse cutting from a point adjacen'tjthe front end of said frame to a'point in advance of said frame, a gear member concentricwith and fixed during drum drive as to angular movement with respect tosaid drum, a pinion journa'led on one of-s aid'tra nsversle shafts and meshing with said gear, afisefcond gear on said shaft,'a pinion on the'othei" ofsaid first mentioned shafts meshing with said ,last mentioned gear, friction mechanism for connecting said last mentioned pinion to said shaft,'means for driving-said last; mentioned shaft from said motorj including a worm Wheel-on said shaft and'* 'a worm driven by said motor and rotating ona vertical axis to the rear of the latter, and means under frictional control for regulating the motion of the machine frame including. a second drum further to the rear of said frame than said first mentioned-drum and rotating ouahorizontal axis and :a flexible Losses? cable wound thereon and extending during trans-verse cutting to a point behind the machine. frame.

1 2. A roomand pillar mining machine comprising a machine frame slida-ble on its bottom over a mine,- bottom, cutting mechanism including a cutter bar projecting longitudinally therefrom, a motor for actuating said cu-tting mechanism, and means for feeding said frame to sump said bar under the coal and thereafter to move said frame and bar laterally across aface during cutting including a pair of parallel transversely ex tending shafts, arope Winding drum rotatingon atra-i'isverse axis, aropewound thereon and adapted to extend during transverse cutting froma point adjacent the front end of said frame to a point in advance of said frame. a gear member-coaxial with; and fixed" during drum drive as to angular movement with respect to said drum, a pinion jon rnaled on one ofsaid transversesh-afts and 'mesln ing with said gear, asecond gear on said shaft, a pinion 0n' the other of said first mentioned shafts meshing With said last mentioned gear, friction mechanis'lnfov-cew net-ting said last mentioned pinion to saidshaft. means for'driving said last I'nentiemed shaft from said motorinclud-meammm wheel on saidshaft! and a Worm drrveqisaid motor and rotatingjon-a vervibalaais to the rear of the latter, said motor-havingan armature shaft lon itudinally disposed with respect to said-frame 'aiad means-iii-- eluding-- a bevel pinion on said armatureshaft and a bevel gearcoaxial with and above-said worm, and means under frictionalcontrol fovregulating the motion"; Ofthe' machine frameincludings l second dram-- further to therear ofsaid fram'e than said first mentioned drum and rotating} on'ahorizoutal axis and a flexible cable wound t h'ere on and ext-ending duringtransvelse cuttingto a point behind the machine frame.

13. A- room and'pi-lla-r mining Iilflcll'll'leifl eluding a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear and of said shaft, a bevel gear rotating on a vertical axis to the rcarof sn id armature shaft and disposed above and meshing with said driving pinion, a: cutter chain driving: sprocket, a. driving-connection; between Said bevel gear and said drivingsprocket, and feeding mechanism for feeding said machine bodily laterally along-a mine face including a feed.- operating memeber rotatable upon a transversely extending-- axis, a worm coaxialwith-and rotateduhy said bevel gear. a transverse shaft carrying; a worm wheel driven by said worm. and: friction controlled driving connections between said. shaft and said feed opera-ting member including a friction clutch coaxial,

' with said: worm-wheel.

let, A. room and pillar mining machine in cluding a motor having its armature shaft; rotatable on an axis extending: longitudinally of the machine, a: bevel: driving pinion upon the rear end of said shaft. a bore]: gear rotating on; a vertical axis to: the rear of said armature shaft and disposed above and meshing with said driving pinion, a cutter chain driving sprocket, a driving connection between said beveL gear and said driving sprocket. and feeding mechanism for feeding saidmachine bodily laterally along a mine face including a feed operating member rotatable upon a transversely extending axis, a worm coaxial with and rotated by said bevel gear, a transverse sha-ft cal-r3- ing a worm wheel driven by said worm; and friction controlled driving connections between saidshaft and said feed operating member inchidinga second shaft parallel to said transverse shaft and a friction clutch concentric with one of said shafts.

15 A-room and pillar mining machine in cluding a motor having; its armature sha-ft rotatable onan axis: extendinglongitudinallyof the machine, a bevel driving-pinion upon; the rear end of said shaft, a bevel. gear rotating on a vertical axis to the rear of said armature shaft, and disposed. above and meshingvwith said driving pinion. a: cutter chain 'driving's'procket, a. driving connection between said bevel gear and. said driving sprocket and-feeding mechanismfor feeding said-machine bodily laterally alonga mine face including; a feed operating member rotatable upona transversely extending axis. aworm coaxial with and rotated-by said ibevielgeana. transverse shaft carrying in wormi wheeltdnivten bysaid worm, and friction cont-rolled driving connections between said shaft. and said. feed operating member including a second shaft parallel to said-transverse shaft and a friction clutch concentric withsaid worm wheel carrying shaft. and controlling the driving of said secondashaftby said first mentioned shaft,

'16, A-room and; pillar miningmaehi-ne i'ncluding-a motor havingits armature shat't rotatable on.a.n=.axis extending longitudinally of'the machine.. a bevel drivingpinion upon the rear end of said shaft, abeigel gear rotatingnpon a vertical axis to; the rear of said armature shaft and disposed above andmeshing-witb said; driving pinion, a cutter chain drivingsprooket, a, driving connection, between said vertical shaft and said driving sprocket and feeding mechanism for feedingsaid. machine bodily laterally alon a mine face including a feed operating member rotatable upon atransversely oxtendingaxis. a worm coaxial with and rotatedby said bevel gear. a transverse shaft carrying aworm wheel driven by said worm. and friction controlled driving connections hetivreeirsa-icl bevel gem; and said feed operating member including friction controlling mechanism coaxial with said worm wheel.

17. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a bevel gear rotating upon a vertical axis to the rear of said armature shaft and disposed above and meshing with said driving pinion, a cutter chain driving sprocket, a driving connection between said vertical shaft and'said driving sprocket and feeding mechanism for feeding said machine bodily laterally along a mine face including a feed operating member rotatable upon a transversely extending axis, a-"worm coaxial with and rotated by said bevel gear, a transverse shaft carrying a worm Wheel driven bysaid worm, and friction controlled driving connections betweenlsaid bevel gear and said feed operating member including a second shaft parallel to said transverse shaft and frictional controlling mechanism" co ling all driving"-of the second mentioned transverse shaft-by saidfirst mentioned transverse'shaft. 4 r 18. A room-and pilla-r mi ning machine including a motor: having its armature shaft rotatable onan 'axis extending longitudi nally of the 1 nachine,-a bevel driving pinion upon the 'rear endofsaid" shaft, a bevel gear rotating upon a vertical axis'to the rear of sai'd' 'armature shaft; and disposed above and meshingwith said'driving pinion, a cut ter chaindriving sprocket, a driving connection between isai'd 'bevel' gear and; said driw ing sprocket, and feeding mechanism? for- 40 feeding said machine bodily laterally along a' mine face including a feed operatin member *rotatable upon' a' transversely exten ing axis, a worm coaxial with and 'rotated by saidbevel gear, a transverse shaft carrying a worm wheel driven by said-worm, a driving element on'said; shaft, a frictidn clutchcm" axial" with 'said'last' mentioned shaft, said driving element" being intermediatev said worm wheel and frict-ion"-clutcl1, and operative connectionsbetween-said driving ele-' ment andsai'd feedoperating member.

19. A room and'pillar-mining machine in-' cluding a motor having its armature'shaft rotatable on an "axis: extending longitudi-' =axial with one of said shafts and controlversely extending axis, a worm coaxial with and rotated by said bevel gear, a transverse shaft carrying a worm wheel driven by said worm, a driving element on said shaft, a friction clutch coaxial with said last mentioned shaft, said driving element being intermediate said worm wheel and friction clutch, operative connections between said driving element and said feed operating member, and means operative though said friction clutch is loaded and said motor running to interrupt the driving of said feed operating member by said motor.

20. A room and pillar mining machine iiicluding a motor having its armatureishaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a bevel gear rotating upon a vertical axis to the rear of said armature shaft and disposed above and meshing with said driving pinion, a cutter chain driving sprocket, a driving conneotion between said bevel gear and said driving sprocket, mechanism for feeding said machine bodily laterally along the mine'face including a feed operating member rotatable upon a transversely extending axis, a worm coaxial with and rotated by said bevel gear, a transverse shaft carrying a wormwheeldriven by said worm, and friction controlled driving'connections between said shaft and said feed operating member including a friction clutch coaxial with said worm wheel, and means including a flexible member, a rotatable member cooperating therewith, and a friction device for varying the'resistance to rotation thereof in a paying outv direction for controlling the angular p osition of said-machine during cutting.

.21. A. room, and pillar m ning machine including a motor. having its armature shaft rotatable on an axis-extending longitudinally of the machine, abevel driving pinion upon the rear end of said shaft, a bevel gear rotating on a vertical axis to the rear of saidarmature shaft and disposed above and meshing with saiddriving pinion, a cutter chain driving sprocket, a driving connection between said bevel gear and said driving sprocket, feeding mechanism. for feeding saidmachine bodily laterally along the mine face including a feedoperating member rotatable upon a transversely extending axis,

a worm coaxial with and rotated by-"said bevel gear, a-transverse shaft carrying a worm wheel driven by said wormand fric tion controlled driving connection between said shaft and said feed operating member including a second shaft parallel to said transverse shaft, a driven element on said second transverse shaft, a driving element on said first transverse shaft and a friction clutch at the opposite side of said driving element with respect to said worm wheel on said first mentioned transverse shaft, and

means including a flexible member, a rotatable member cooperating therewith and a friction devicefor varying, the resistance to rotation thereof in a paying out direction for controlling the angular position of said machine during cuttin' V 22. Ina room and pillar mini'ng machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket, driving means therefor actuated by said motor including an element rotating on a vertical axis, said element on rotation carrying therewith a worm, andmea'ns for feeding said machine includin aflexible feeding member, a feed operating member cooperating therewith and rota-table on a transverse axis, and means for driving the same at a plurality of predetermined speeds in one direction with said motor runningin one direction including pl uralspee'dplane tary gearing frictionally controlledat either speed and driven by saidiworm.

23'. In a roomandIpil l'arl mining machine including a motor having an armature shaft rotatable on an' axis e-xtend in" longitu'cli' nally of the machine, a cuttenchfain driving sprocket, driving, means therefor. actuated:

by said-'motor including'an' element' rotating on a vertical axis and carrying there with a worm, and means-renamin said machine m'cludmg a flexible feeding member, a feed operating member cooperating therewith and rotatable on a transverse axis,

and means for driving the samefat'a plu rality of'predetermined speeds 'iii'one direction with said motor running in' one di'i'ee'-.

tion including plura'l s'peed planetary gear in frictionally controlled at eitlier' speed and drivenflbysaid whrin, and controlling means for said gearing includlng an element reciprocable in a' dir'ection perpendicular to the plane of'o'rb'itz'il movement of the planetary gearing to change the speed produced thereby.

24.1111 a room and pillarmining machine including a motor having an armature shaft rotatable on an axis extendinglongitudinally of the machine, a cutter chain'di'iving sprocket, driving means therefor actuated by said motor including an element rotating. on a verticalaxis' and carrying therewith a. worm, and means for feeding said machine including a flexible feedingmemb'er, a feed? operating membercooperating therewith and rotatable on a transverse axis, and means for driving the same at a plurality of predetermined speeds in one direction with said motor running in one direction includin plurai speed planetary gearing trictioinilly controlled at either speed and driven by said worm, and controlling means for said planetary gearing including anlelelnent reciprocable along the line perpendicular to the orbit and coincident with the axis of orbital movement of said planetary gear ingto effect a change in the speed produced:

25". In a" room and'pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, acutter chain driving sprocket, and drivingme'ans' therefor lDClllCling' a bevel'pini'on' onsaid armature shaft, a-bcvcl gear rotatable on a vertical axis and driven by'said bevel pinion, a spur pinion coaxial with said bevel gear, a second spur gear rotating'on a vertical axis, and 0perative connections between said last men'- tioned spur gear and said cutter chain driving' sprocket, and feeding means forsaid" miningmachine including a flexible feeding member, a feed operating'member rotatable on a transverse axis and cooperating with said flexible feeding member, a" worm ro tatable with one of' said elements rotating on a vertical axis, and means driven by said worm for driving said feed operating member at' a plurality of predetermined speeds in one direction with said motor running" in onedirection including a plural predetermined speed planetary gearing frictionally control-led at' either speed and driven-by said worm.

rotatable on" an extendinglongitudinally oft'lie machine, a cutter jchaindriv-in'g' sprocketaird drivingmeans therefor'i'nclud bevel pinion on said armature shaft, a gear rotatable on; a vertical axis and drivenbyj said bevel'pi-nion, aspur'gear e0 axial with said "Bevel gear," a second spur gearrotating'on a verticalaxi's; and operativeconnections between said last mentioned spur gear and said cutter chain driving sprocket, and feding means for said mining machine iit'cluding, a flexible feeding memher, a feed operating" member rotatable on a transverse axis and cooperating with sa id flexible feeding member, a worm rotatable with one of said elements rotatingona verticalaxis, and means-driven by said worm for driving said feed-"operating member at a plurality of' predetermined speeds in one direction-with said. motorrunning in one di rection including. plural predetermined speed planetar 5' gearing frictionally con ti olled at either speed, and" controlling means for; said gearing including an element reciprocalile'ina' direction perpendicular to the plane oforbital movement of theplaneta'ry gearing to change the speed produced thereby.

27. In a room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chaindriving spi'oclret'a'nd driving means therefor includ ing a bevel pinion on said armature'shaft, .a bevel gear rotatable on a vertical axis and ing a bevel pinion on saidarmature shaft,-

driven by said bevel pinion, a spur gear coax al with said bevel gear, a second spur gear rotating on a vertical axis, and operative connections between said last mentioned spur gear and said cutter chain driving sprocket, feeding means for said mining machine including a flexible feeding member, a feed operating member rotatable. on a- -transverse axis and cooperating with said flexible feeding member, a worm rotatable with one of said elements rotating on a vertical axis, and means driven by said worm for driving said feed operating member at a plurality of predetermined speeds in one direction with said motor running in one direction including plural speed planetary gearing frictionally controlled at speeds, and controlling means for said planetary gearing including, an element reciprocable along thelineperpendicular to the orbit and coincident with, the axis of orbital movement of said planetary gearing to effect a change in the speed produced.

.128, Ina room pillar miningmachine including; a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, acutter'ehaindriving sprocket and driving means therefor includabevel gear rotatable on a vertical axis and driven :bysaidbevel inion, a spur gear coaxial with said beve gear, a second spur geargrotating on a; verticalaxis, and operative connections between saidlast mentioned spur Qgear and said; cutter chain. driving sprocket, ,and feeding means for said mining machine including a flexible feeding member, a ,fee d operating ,member' rotatable ,on a

: transverseaxisand cooperating with said transversely and is disposed further from said-armature shaft than the axis'of rotation of said worm i wheel andsaid feed op crating member.

29. A room and pillar mining machine including a'" motor having an armatuge shaft rotatableon an axis extending longitudinally of the machine, a driving pinion on said armature shaft, a gear meshing with said driving pinion and driven thereby, a

'shaft on which said gear is mounted and which is rotatable with said gear, a plurality of driving elements on said shaft, cutting mechanism driven by one of said elements, and feeding mechanism operated by the other including a flexible feeding member, a winding member cooperating therewith and rotatable on a horizontal transverse axis, and means actuated by said last mentioned driving element for rotating said Winding member at a plurality of predetermined speeds to cause the same to draw in said flexible feeding member at a plurality of speeds and under frictional control at each speed while said motor runs in one direction, said last mentioned means including friction mechanism having a horizontal axis.

30. A room and pillar mining machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion on said armature shaft, a gear meshing with said driving pinion and driven thereby, a shaft on which said gear is mounted and which is rotatable with said gear, a plurality of driving elements on said shaft, cutting mechanism driven by one of said elements, and feeding mechanism operated by the other including a flexible feeding member, a winding member cooperating therewith, and means actuated by, said lastinentioned driving element for rotating said winding member at a plurality of predetermined speeds to cause the same to draw in said flexible feeding member at a plurality of speeds and under friction control at each speed while said motor runs in one direction including a multi-speed planetary gear reduction all of Whose elements rotate on axes-extending "transversely of said frame. '31. A room and pillar mining machine in-' eluding a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion on said armature shaft, a gear meshing with said driving pinion and driven thereby, a shaft on which said gear is mounted and which is rotatable with said gear, a plurality of driving elements on said shaft, cutting mechanism driven by one of said elements, and feeding mechanism operated by the'other including a flexible feeding member,a winding member cooperating therewith, and means actuated by said last mentioned driving element for causing said winding member to draw in said flexible feeding member at a plurality of predetermined speeds and under frictional control at each speed while said motor runs in one direction including a multi-speed platenta-ry gear reduction all of whose elements rotate on axes extending transversely of said frame and driving means therefor including an element actuated by said last n'ientioned driving element and rotating on an axis parallel to a line perpendicular to the axis of said shaft.

32 A oomi Pilli min ng m h e s cLuding a motor having. an armatureshaft rotatahleon an axis extending longitudinally of the machine, a dr ving pinion on said,

armatureshaft, a gear meshing with said driving pinion. and driven thereby, a shaft on which; said, gear is mounted and which is rotatable with said, gear, a plurality of driving elements on said shaft, cutting mechanism drivenby one of saidelements, and feeding mechanism operated by the other including a flexible feeding member, a windingv member cooperating therewith, and means actuated by said last mentioned driving element. for. causing said winding member to draw in said flexible feeding member at a plurality of predetermined speeds and under frictional control at each speed while said motor runs in one direction including a multi-speed, planetary gear; reductiQm all of whose elements rotate on axes, extending transv rse y f sa d frame and d x g meansherefor includ ngan lemen actuated bysaid last mentioned dr ving elem and r tating n an axis. p ralle to a l n p p n cular tothe a s oi said; s an meansfor controlling the speed of drive of said, planetary gear reduction including an element reciprocable n a. direc ion par llel to the axes of rotation of theelements of, said planetary gearing and) operative in different positi ns to effect different. cooper tion. between the elements or said gear n 33. A. room and pillar. mining machine abiding-1a motor. having, an; armature. s aft notatableion anaxis. extending -longitudinally of the; machine,' adriving pinion on. said armatun'e shaft, age'ar meshing with: said driving-pinion and; driven; thereby, a shaft on which said gearis mounted; and=wliie11 is rotatable Witltsaid gear, a'plurality of driving elements on. said. shaft, cutting. mechanism. driven'by one; of. said elements, and feeding mechanism operated by the other, including a flexible feeding member, a winding member cooperating therewith, and means actuated by said last mentioned driving element for causing said winding. menr her to rotate at a plurality of predeter; mined speeds in the same direction todraw in said flexible feeding member at a plurality of; speeds and. under frictional con? trol at each speed while said motor runs. in one direct-ion -including, a multirspeed planetary gear. reduction all of whose elements rotate onaxesextending; transversely of said frame, and-means. for controllingthe speed of drive vof said: planetary gear reduction including an element reciprOCable in, a direction parallel t the axes of rotation oft-he elements of said p anetary gearing and operative in different positions to effect different cooperation between the elements of; said gearing.

A room. and. pillar mining machine including a. motor having; an armature on said armature shaft, a gear meshing with said driving pinion and driven thereby, a shaft on which said ear is mounted which is rotatable with salt gear, a worm and a, driving pinion on said shaft each rigidly connected thereto, cutting mechanism driven by said last mentioned driving pinion, and feeding mechanism operated by said worm including aflexible feeding member, a wind; ing member cooperating therewith, and means actuated by said worm for causing said winding member to draw in said flexible feeding, member at a plurality of predetermined speeds and under frictional; con: trolv at each, speed while. said motor runs in one direction.

A room and pillar mining machine. including a motor having an armature shaft rotatable on an axis. extending.- longitud} nally of the machine, a dr ving pinion. on said armature shaft, a gear meshing with said dr-iying, pinion and driven. thereby, a shaft on which said gear is. mounted, which is rotatable. with said gear, a worm and a driving pinion on said slia ft, cutting,inechanism driven by said last mentipned driying pinion, and feeding mechanism. operated by said, worm including. a flexible feedingmember, a winding. member eooperat ing therewith and means. actuated, by worm for causing, said winding. member to rotate at a plurality of predetermined speeds in, the same direction, to draw. in said flexible feeding member at a plurality of speeds and; under frictional control, at each speed while, said motg runs,- in one direction including. a mnlti-speed planetary gear reductionall of whose. elements rotate on axes extending transversely of said. frame.

36. A room and pillar mining machine including annotor having. an armature shaft rotatable on an axis extending, longitudinally of the.machine,a, driving pinion onisaid armature. shaft, a gear meshing with said driving pinion and, driven thereby, a shaft on which said gear is. mounted which, is 1'0; tatable with said. gear, a worm and a driv; ing pinion on said shaft, cutting mechanism driven by said last mentioned driving pinion, and feeding mechanism,operatedby said. worm including a flexiblefeedingmem; her, a. winding member cooperating there, with and meansv actuated by said, worm for. causing said winding. member to rotate at a plurality of predetermined speeds inthe same direction to draw. in saidiflexible feeding member at a plurality Off speeds and under, frictional control at each speed while said, motor runs inone direction including a mnltirspeed planetary gear reduction all of whose elements rotate on, axescxtending transversely of said frame, and driving means therefor including a worm wheel actuatedby said worm and rotating an element of said planetary gearing.

37. A room and pillar mining machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pin'lon' on said armature shaft, a gear meshing with said driving pinion and driven thereby, a shaft on which said gear is mounted'which is rotatable with said' ear, a' worm and a driving pinion on said s iaft, cutting mechanism driven by said last mentioned driving pinion, and feedin mechanism olperatedby said worm including a flexib feedlng member, a winding member cooperating therewith and means actuated by said worm for causing said winding member to rotate at a plurality ofpredetermined speeds in the same direction to draw in said flexible feeding niember; at a plurality of speeds and under frictional contrdl-ateaeh speed while said motor runs one" direction including a multi-speed planetary gear: reduction all of whose elements rotate on axes extending transversely of said frame, drivingmeans therefor including a worm wheel actuated by" saidworm and rotating ahfe'le-ment of 'saidlplanetary 'gearihg'iand means for controllin the coope'ration'of the elements of said a net'ary geafifig toefl'ect; a different speed ofdrive therethro'u'gh including f "a v ity of drivin'g'eleinents on 'said shaft, cut

tingmechanism including a bar rigidly'proiecting longitudinally from'said frame during c'utting and 'acirculating cutter chain and driven byfoneof-said elementsiand feeding mechanism operated by the other of said elements ncl'uding flexible feeding nie'r'iib' rfa 'fe oper ting member cooperatingtliei'ewitliiaiid" ranting-611a transverse axis, and means aetuated by" 'said-tl'ast' mentioned driving, fleleme'nt for: causing said winding member to draw in said flexible feeding member at a plurality of predetershaft on which said gear is mounted and which is rotatable With said gear, a plurality of driving elements on said shaft, cutting mechanism including a bar rigidly projecting longitudinally from said frame during cutting and a circulating cutter chain and driven by one of said elements and feeding mechanism operated by the other of said elements including a flexible feeding member, a feed operating member cooperating therewith and rotating on a tranversely ex-' tending axis, multi-predeterminedspeed driving means therefor frictionally controlled at each speed including a planetary gear reduction, and means for causing the elements thereof to cooperate differently to produce different predetermined driving speeds.

40. A room and pillar mining machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinlon on said armature shaft, a gear meshing-- with said'driving pinion and driven therebyga shaftonwhich said gear is mounted and which is rotatable with said gear, aplura-lity ofdriving elements on said shaft, 'cutting mechanism including a bar rigidly projecting longitudinally from said frame dur-:

ing cutting and a circulating cutter chain and driven by one of said elements and feeding mechanism operated by the other of said elements including a flexible feeding member, a feed operating member cooperating therewith and rotating on a transversely extending axis, multi-predetermined-speed driving means therefor frictionally controlled at each speed including a planetary gearreduction, and" means for causing the elements thereof to cooperate differently to produce different predetermined driving speeds, said planetary gear reduction being so constructed and arranged that'all' of the elements thereof rotate on transversely? ex tending axes.

41. A room' and pillar mining machine including a motor having an armature shaft rotatable on anfaxis extending longitudinally of the machine, a driving pinion on said armature shaft, a gear meshing'with said driving pinion and'driven thereby, a shaft on which said gear is mounted and which is rotatable withsaid gear, a plurality of driving elements fixed "to said shaft, cutting mechanism driven by one of said elements, and machine feeding and guiding mined speeds and under frictional'control mechanism including a plurality offlexible at each-speed while said motor runs in one directioria I 39. A room and pillar mining'machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion'on said armature shaft, a gear meshing with said driving pinion and driven thereby, a

feeding portions extending in opposite directions from opposite ends of said machine frame during cutting across a face, means operated by thesother of said driving elements including a feed operating member rotatable on a transverse axis and cooperating with one of said portions to effect movement of the machine toward the end of said llt) igss sev portion ren'iote from said machine, and means fi'icti'ohal'ly controlled at each speed 42. A room and pillar mining machine in- Chidihgh motor ha'vingan "armature shaft rotatable on an axis extending longitudinal ly't'r the machine, a drivingpinion'on said armature shaftfa 'gfe'ar meshing with said driving pinioh and driven thereby, a shaft Uh which said gear is mounted and which is rotatable with said gear, a plurality of driving elements fixed to said shaft, cutting operated 'by'the other of said'driving elemerits ificliiding a feed operatin' member cooperating "with one 0fsaid port1oh s to ef- *fect movement of the machine toward the end of said portion remote from said machihe, and means frictionally contro lle'dlat each speed for effecting rotation of said feed operating ineiiiberat a plurality of predetermihe'd 'speeds and 'means for controlling the 'lehgth of said" other portion including ameniber rotatable on a horizontal axis and cooperatin *with' said last finen'tioried por- 'tion and frictional controlling means controlling'the rate'o'f rhtation of said member. -13; A room and pillar mining machine 'iiich'iding'a mdtor havi'n'g a'n armature shaft rotatable on 'an axis extendinglongitudinallvof the machine, a driving pinion on said armature shaft, agear meshing With said driving pinion and driven thereby, a shaft on which said gear is mounted and which is rotatable ivith said gear, a plurality of driving elements rigid on said shaft, cuttin'g mechanism driven by one of said element-s, feeding mechanism operated by the other includ'ihg a fle itible feeding portion. a wind ing member cooperating therewith, and means actuated by said last mentioned driving element for causing said Winding mem- 'her to draw in said flexible feeding member at a plurality of predetermined speeds and under frictional control at each speed while said mo't'or ruiis in one direction, and frictionallygontrolld means for cohtrollingthe angle of said machine rel-atit'ef to a ivorking face including a second flexible feeding portion and a frictionally controlled rotatable element cooperating therewith. V

44. A room and pillar mining machine including amotor having an armature shaft rotatable on an akis extending longitudinally of the machine, a driving pinion on said armature shaft, a gear meshing with said driving pinion and driYen thereby, a shaft on which said gear is mounted and which is rotatable with Saidgear, a plurality of "driving "elements on said shaft, cutting mechanism driven by oiieof saidelem'ents, feeding mechanism'operatetl by the other including a 'flexible fe'edirig'ijorti'on a wind- 'member cooperating therewith, and means actuated by said last'iiientiond drivi'ng elemeiit for causin said windin 'niember todr'aw'ih said flexiblefssdin jiiiember at'ja plurality of redetermined spe'dsaad im'der frictional control at each speed ivhile -said motor "runs in one direction including a multi 'sp'eed pla'ri'etary 'gear 'rediictioh all and 'a fridtibnallycontrolled resemble at merit eoopratin therewith.-'. I

A room and illar jl'i'liiiiligj; niiichihe including a motor'h'av'iiig ahaririatiir'e shaft rotatable jo'n an axis extehdifig lo'r'rgitu'di- 'nally f the "machine, a driving p'ifiioh on said armature "shaft, "a gear meshing; with said driving pinion arid jd'ri'vntl iere y, a Sim-a "on whifch 'said gear is ihbuiited'aiid which is rotatable With 'said gear, a, pinrality or driving elements "on said shaft, cutting mechanism driten byh1ie offsa'id -eliaents, feeding mech'atii'sm operated by are ethe including a flexible *fediiigror- Mon, :1 wifiding member cotipriitifig there with, and 'ii'ie'zins 'actuatd by'said last ln enti'o'i'ied 'driv'in element for 'c aiisingfsaid winding memtias were at a plurality of predetermined speeds to draw iii said. fl exi- 'ble feeding metiiber "at a pli'irality of speeds and lihder frictional conti'ol at each Speed w'yhil'e said meter runs in one direction ineluding a millti-speed pla'nta'ry gear reductio'n all of whose elements rotate 0n aiies extending transversely of said frame, and driving means therefor incliidirigan'eleinht actuated by said last'riientioiied driving elem'e r'it and rotating 'oii an axis parallel to a line perpendicular to 'the' axis of said shaft, and frictionally controlled means for controlling the angle of said machi'rie relative to a working fa'ce in'ch'iding asecofid flexible feeding portion 'and a frietio'nal'ly controlled rotatable elenient' cooperating therewith.

46. A roonrhnd pillar mi'ilin machine including a motor having an iafiaature shaft rotatable on an axis extending l'ong'ri'tudinally of t'hemachi'n'e, a drivingpihi'0n on said armature shaft, a gear meshing with said driving pinion and driven thereby, a shaft on which said gear is mounted and vvhich is rotatable with said gear, a plurality of driving elements on said shaft, cu t ting mechanism driven by one of said elements, feeding mechanism operated by the other including a flexible feeding portion, a winding member cooperating therewith, and means actuated by said last mentioned driving element for causing said winding memher to rotate at a plurality of predetermined speeds in one direction to draw in said fiexible feeding member at a plurality of speeds and under frictional control at each speed while said motor runs in one direction including a multi-speed planetary gear reduction all of whose elements rotate on axes extending transversely of said frame and driv ing means therefor including an element actuated by said last mentioned driving element and rotating on an axis parallel to a line perpendicular to the axis of said shaft, and means for controlling the speed of drive of said planetary gear reduction including an element reciprocable in a direction paral lel to the axes of rotation of the elements of said planetary gearing and operative in different positions to effect different cooperation between the elements of said gearing, and frictionallycontrolledmeans for controlling the angle of said machine relative toa working face including a second flexible ,feedingportion and a frictionally controlled rotatableelement cooperating therewith.

' 47. I room andpillar mining machine in- ;cludinv a motorhaving anarmature shaft rotatable on an axis, extendinglongitudr nally ofthe machine, .a driving pinion on saidarmature shaft, 2, gear meshing with said; drivin pinion and driventhereby, a shaftlon which said gear. is .mounted and whichis rotatable with said gear, a plurality of driving elements on said-shaft, cutting mechanism driven by "one of said elements,

.feeding mechanism operated by the other including a flexible feeding'portion, a winding member. cooperating therewith, and means actuated by said last mentioned drivingeleiment for causing said winding member. to rotate at a plurality of predetermined speeds in onedirection to draw in said flexible feedingmember ata: plurality of speeds and un- .der frictional control at. each speed while said motor runs inone. direction including a multi-speed planetary gear reduction all of whose elements rotate on axes extending transyersely of said framc,gandjmeans for controlling the speed-of drive of said planetary gear reduction including an element reciproc-able in a direction parallel to the axes of rotation of the elements of said planetary gearing-and operative in different positions to effect different cooperation between the elements of said. wearing, and frictionally controlled means or controlling the angle of said machine relative to a working face including. a second flexible feeding portion and a frictionally controlled rotatable element cooperating therewith.

48. A room and pillar mining machine ineluding a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion thereon, a gear driven thereby, a shaft supporting and driven by said gear, a worm rigidly mounted on said shaft adjacent said gear, a driving pinion on said shaft at the opposite side of said worm from said gear, cutting mechanism including a cutter bar extending during cutting longitudinally of said frame and carrying a circulatin cutter chain, a cutter chain driving sproc et and operative connections between said sprocket and said second mentioned driving pinion, and mechanism for feeding said machine laterally during cutting including a flexible feeding member, a feed operating member cooperating therewith, and driving mechanism for said feed operating member including driving gear operative to effect rotation thereof at a plurality of predetermined speeds and including at each of such speeds frictional .means for limiting the power transmissible.

49. A room and pillar mining machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion thereon, a shaft disposed in a. common plane with said first mentiOned shaft, a-gear on pinion and efiectingrotation of said second mentioned shaft, a worm. rigidly fixed on said shaft adjacent said gear, .a driving pinion on said shaft at the opposite-sideof said worm from said, gear, cutting mech anism including a cutter bar extending dur ing cutting longitudinally'of said frame and carrying a circulating cutter cliain,-'-a, cutter chaindriving sprocket and operative connections between said sprocket and said second mentioned driving pinion, and mechanisnr for feeding said. machine laterally during cutting including a flexible feeding member, a. feed operating member cooperating therewith, and plural speed driving mechanism therefor driven by said worm and providing a plurality of predetermined speeds at each of which it is .frictionally conand carrying a circulating cutter chain. a

cutter chain driving sprocket and operative connections between said sprocket and said second mentioned driving pinion, and mechsaid. second mentioned-shaft driven by said anism for feeding said machine laterally during cutting including a flexible feeding member, a'feed operating member cooperating therewith and rotatable on a transverse axis, and. driving mechanism for said feed operating member including driving gearing" operative; "to effect rotation: thereof. at a plurality of predetermined speeds and including at each of such speeds frictional means for limiting the power transmissible.

51. 'A room and pillar mining machine including a motor having an armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion there on, a gear driven thereby, a shaft supporting'an'd driven by said gear, a worm on said shaft adjacent said gear, a driving pinion on said shaft at the opposite side of said worm from said gear, cutting mechanism including a cutter barextending during cuttinglongitudinally of said frame and carrying a'circulating cutter chain, a cutter chain driving sprocket-and operative connections between s aid sprocket and said second mentioned' driving pinion, and mechanism for feedi'n grsaidimachine laterally during cutting including a flexible feeding member, a"feedr-oper'atin member cooperating there witlr-androtata leon a transverse axis, and drivingimechanism for said feed operating In'enib'er iii eluding drivin gearing operative toefl'ect rotation thereof at a plurality of predetermined f speedsand including at each of suhspeedsfrictional means forxlimit ing'the" power transmissible? 1' I 52. A'iioom' and .pillarmining machine includingga motor having an 'armature shaft rotatablel onzgani raxis extending longitudiiiiallycf the machine; a driving pinion thereoli'ga geai' driventhereby, a shaft support ingand tiriv edby said gear, a worm 'on said shaft adjacent said-gear, a'drivin'g pinion on said shaft'at the opposite side of said worm from: said" gear, cutting mechanism including a cutter bar extending during cutting longitudinally of said frame and carrying a circulating cutter chain, a cutter chain driving'sprocket and operative con nections between said sprocket and said sec-' 0nd mentioned driving pinion, and mechanisnr for feeding said machine laterally duringcutting includinga flexible feeding member, a feed operating member 00- opera'ting therewith and rotatable on a transverse axis. and driving mechanism for said feed operating member including driving gearing including planetary gearing and operative to effect rotation Uhe'reof at a plurality of predetermined speeds and including at each of such speeds frictional means for limiting the power transmissible, said feed operating member rotating on a transversely'extending axis disposed in front of and parallel to the axis about which the orbital movement of said planetary gearing takes place. I

53. A room and pillar mining machine including a motor having an armature shaft rotatable on an axis extendinglongitudinally of the machine, a driving'pinion thereon a gear driven thereby, a shaft supportingv and driven byusaid-gear, a worm on said shaftadjacent said gear, a driving pinion on said shaft at the opposite side of said worm from said gear, cutting mechanism including a cutter bar extending during cutting longitudinally of said frame and "carrying a circulating cutter cliain, a cutter chain driving sprocket, and operative connections between said sprocket and said second mentioned driving pinion; and mechanism forz feeding said machine laterally during cutting including'a flexible feeding member, a feed operating member cooperating therewithandrotatable on a transverse axis, and driving mechanism for said feed operating member including drivin g gearing "including planetary 'gearing and operative to effect rotationstliereof'at a plurality of predetermined speeds'and -in eluding at each of isuclrfspeeds frictional means for limiting the power} transmissible,

said feed operating ilnembervfotatin'gonr a transversely extending axis disposed iinteri mediate the: axis of orbitabrotatiori'rof said planetary gearin "and .said; -armature P l' i'h' ii t pinionj i I 5%. A' room and pillaril min ng--'-niac1iine including a motor having; -'an=rsarmature shaft rotatable on aniaxis extending longi tudinally :of the machine; a driving '2 pinion thereon,-a gear driven thereby, 'a shaft supporting and driven bysaid gear, a worm rigidly mounted on said ish'lft adjacent said gear, a driving 3 pinion on sa1di shaft at the opposite side ofsaid worm froin said gear, cutting mechanismw-including a'xtcut ter bar extending during cutting longitudinally-of said frame and carrying 'acircu lating cutter chain, a cutter chain driving sprocket and operative corinections between said sprocket and said 'second mentioned driving pinion, and means for effecting feeding of said mining machine-and con trolling the angle thereof to 'the 'face during cutting across a -face including a plurality of flexible feeding portions; extending in opposite directions fromthe opposite" .ends' to said frame during cutting across a face, a feed operating'member 'co operating with the forwardly extending portion, driving mechanism for gsaidfeed operating member including al driving gearing operative to effect-rotation thereof at a plurality of predetermined speeds and including at each of said speeds frictional means for limiting the power-transmissible and a rotatable member rotating on a-h ori porting and driven by. said-gear, a worm on sa idishaift adjacentisaid gear, adriv-ing pinion on said shaft atthe opposite side of. said worm fromsaid; gear,- cutting mech-anismincluding: a, cutter bar; extending-1 during; cutting longitudinally. of: said frame.- and: carrying; a circulating cutter chain, a. cutter chain; driving sprocket and operativeconnections between said'z sprocket and; said secondi mentioneddriving: pilb ion and; means for: effecting feeding of said. mining; machine and, controlling; the anglegthereofztoi the; face during cutting across-a face-"incl-udingj a pluralityof1flexibile; feedingr portions extending in; opposite directions-'from-the;opposite ends-of: said frame; during': cutting across; a face, a feed operating; member cooperating; with the: forwardly'extending; portion, driving mechanismq for; :said feed: operating;- meme hem including): driving gearing-including planetary gearing and operative to: effect rotation thereof at a plurality of predeterr :speed'si and:including atzeaehiof, said speedss-sfrictionali"meanso for limiting; the power transmissible,-.and arotatable; mem: berrrotatington; a.-'.horizontal Y axis: and ar: ranged: adjacent-this rear. eudaofrsaid-e ma? chine and: cooperating Wzitli the. iearwardly extendingflexible} portion and: provided witliz frictionalcontrolling; means,. said feed operating member:- rotatlngon. a trans-v versely -;,exten:dingr axis: disposed. in front of and i parallelto the axis-about which the orbital ;movement of said planetary gearing takes-place.- 7 I 5.6; room and; pill'an-mininganachine-in; cluding: a 1 motor having anarmature shaft rotatable onan axis. extending longitudinah lyrof themacliine, a-driving; pinion thereo-m an gear driven -thereby,i a shaft supporting and driven; by said! gear-, aworln onosaid shaft adjacent said-gear; a driving pinion ,on said shaft at: the opposite sideof-saidworm fronnsaid gear; cutting mechanisnaincluch ing a? cutter-bari-extending duringcutting longitudinally of said frammand carrying a circulating cutter; chain,- a icutten chain driving" sprocket and; operative: connections: be tween; sa'idfj-sprocketv and saidsecond men tionetl drifvinggpinion and meansj for-: effects, ing-zfeeding: ofssaid ,miningi-maehine and :controllinggthe"anglevthereofi to the. face during cutting across? a, face including a; plurality of flexible feeding portions extending in op- 1-, sa -s27 posite directions: from the opposite ends'of saidiframei during cutting. across a face,'-.a feedioperating'member' cooperating with the forwardly extending-portion; driving. mecha+ nism forsaid: feed operating: member: includ: ing drivinggearing including: planetary gearing" and operative to. effect: rotation thereof at; a plurality ofapredetermined speeds=and=including at each of said speeds frictionalr means for: limiting the power transmissible; and a rotatable member: r0- tating-onv a: horizontal axis and arranged adjacent the rear; end of, said machine and: cooperating with the rearwardly ex? tending flexible.- portion 1 andv provided with frictional controlling means,: said feed;operating member-rotating; on a-transversely ex: tending axis disposed intermediate the axis of! orbital rotation of said; planetary geara ing.=and-'saidiarmature shaft; y

57. Ina: room andpillar machine, a machine-frame having-a cutterbar projectingztherefrom longitudinally, a:; cutter chain on saidzbar a; motoronjfl-said'zframe, driving means for-saidichaim31xituated by said motor; and:meansiforifeedingisaid imachine-to: sump -saidn bar into a: workin face including mfiexible feeding memben adapted to; be::p1aced-under tensioni during sumping a ifeedeoperating, membTemcooperwting there,- withgiand actuating aneanseforssaid fediopi erating; membem effective to; rotate: the ,Same at: either of: two 2 predeterminedispeeds and frictionally: controlled: Q at? either: speed; said means including epicyclid gearing compris-z ing; elements ;oooperating} differently v during drive atasaid two predetermined speeds,

5v82iAn'r0om;and pi-11ar miningima'chine includi-ngrat motor-.having 1its-,armature shaft rotatable one-an; axissextendi'ng longitudis n-ally OfttllQ; machine; a; bevel driving :pinion' upon: the 5 rear end: of? the shaft;. a,- vertical shaft arranged to the rear. "of ?said; armature shaft andzcan-yinga bevel geari-adjacentithe upper; end s-thereofi' meshing with said driving: pinion, {a cutter: chain-i driving sprocket; drivingconnections between-amid vertical shaft and;said cutter: chain driving sprocket and mechanism. drivenby saidmotori for feeding;sa-id.machine bodily laterally along a" mine face during cuttinggincluding a; feed operating 5 member; rotatable-1.; upon ahori=- zontal-axis; and actuating-means therefor i111 cludingyaaworin rotatable upon a vertical axis, a; worm: wheel' driven thereby and, a friction.- clutclrbetween said 'worm wheel and said feed'operatinggmemben-i 19. A: room and pillar mining machine-including ai-motor having its, armature shaft rotatable on an; axisextending longitudinal 13!; of the machine, abevel driving pinion upon; the rear; end: of said shaft; a vertical shaftaarranged attherear of said armature shaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a cutter chain driving SPIOCliQlZ, driving connections between said vertical shaft and said driving sprocket, and feeding mechanism for feeding said machine bodily laterally along a mine face duringvcutt-ing including a feed operating member rotatable upon a transverse axis and actuating means therefor operative to effect drive thereof at a pluralityof speeds including worm gearing including driving and driven elements and friction clutch means coaxial with the latter.

60. A room and pillar mining machine including a motor having an armature shaft rotatable upon an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end thereof and meshing with said driving pinion, a cutter chain driving sprocket and driving connections between said vertical shaft and said driving sprocket, and feeding mechanism for: feeding said machine bodilylaterally along a'mine face during cutting including a feed operating member rotatable upon a transverse y extending axis and actuating means therefor including a .worm rotatable upon a vertical axis, a worm .wheel rotatable upon a transverselyextending axis and friction clutch meanscoaxial with said worm wheel. v

61. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the 'machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft'and carrying a bevel gear adjacent the upperi "end thereof meshing with said driv-Q ing'pinion," a cutter chain driving sprocket, a driving gear therefor coaxial therewith, a driving connection between said vertical.

shaft andl'said driving gear, and feeding mechanism forfeedmg said machine bodily laterally'al ong a mine face during cutting including a feed operating member rotatable upon a horizontal axis lying in a line whose projection vertically cut-s said driving gear and actuating '1neans therefor including a worm rotatable upon a vertical axis, a worm wheel rotatable upon a horizontal transverse axis whose projection vertically also cuts said driving gear, and friction clutch mechanism coaxial with said worm wheel.

62. A room and pillar mining machine including a motor having its armature shaft rotating on an axis extending longitudinally of the machine, cutting mechanism including a cutter chain driving sprocket, a driving gear therefor coaxial therewith, feeding mechanism for feeding said machine bodily laterally along a mine face including a feed operating member and driving mechanism therefor including a worm rotating upon :1

vertical axis and in a direction opposite to the direction of rotation of said. driving gear, a worm wheel driven by said worm and a friction clutch coaxial with said worm wheel.

63. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion on the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end meshing with said winding pinion, a cutter chain driving sprocket, a driving connection between said vertical shaft and said driving sprocket, and feeding mechanism for feeding said machinebodily laterally along the mine face during cutting including a feed operating member and actuating means therefor operative toactuate the same at a plurality'of predetermined speeds and frictionally controlled at each of said predetermined speeds including a worm rotatable upon a verticalaxis. f

64. A room and pillarniining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion on' the rear end ofsaid shaft, a vertical shaft arranged to the rear of 'said armaturejsha ftj and carrying' a bevel gear adjacent the, up per end meshing with said driving pinion, a cutter chain drivingfsprocket, bidriviifig connection between said vertical shaft. and said'driving sprocket,,-and mechanism for feeding said machinelbodily laterally alongi the mine face jduringfjc itting incl iding a feed operating member, rotatable up'o'n horizontal axisi'andf actuating 1 there; for including W0rm} otat'able'li ipoii avers-1; cal axis, a Worm wheeldriven.therebjfiiandj friction clutch means coaxial -with said worm wheel. i

65. A rooni' and pillar mining machine in- T cluding a motor having its armatur shaft.

rotatable on an axis extending longitudinal ly of the machine, a bevel driving pinion on the rear end of said shaft, a vertical shaft. arrangedto the rear-of said armature shaft and carrying'a bevel gear adjacent the'upper end meshing withsaid driving pinion, a cutter chain driving sprocket, a driving con nection between said vertical. shaft and said driving sprocket, and. feeding mechanism for feeding said flnachine' bodily laterally along the mine face during cutting including a feedoperating member rotatableupon a transverseaxis and actuating 'means therefor including a worm rotatable upon a vertical axis, a worm wheel rotatable upon an axis parallel to said transverse axis, and

friction clutch mechanism coaxial with said rotatable on an axis extending longitudinally of the machine, a bevel driving pinion,

upon the rear end of said shaft, a vertical member and actuating meanstherefor including a worm rotatable upon a vertical axis, a Worm wheel driven thereby and rotatable upon an axis parallel to the/ 3X18 of rotation of said feed operating member, and p 1ng member, clutch mechanism nclud friction clutch mechanismcoaxial with said worm Wheel.

67. A room andpillar m1n1ng machine including a motor having its armature shaft rotating on an axis extending longitudinally of the machine, cutting mechanism including a cutter chain driving sprocket, a driving gear therefor coaxial therewith, and mechanism driven by said motor for feeding said machine bodily laterally along the mine face including a feed operating m ma? a driving gea r v therefor coaxial therewith,

edingm h inis i rxfe d g ai a h n bodily laterally along the mine face at a plurality 1 of friction controlled predetermined spfiiids including a feedoperaiting emben. a rm.$ 81, p an taryv iv g connect ons coaxial yvrth said 4 worm wheel, betweensa d,worm vheel and sa d operat;

ing, a m mber. cipmaablst ially. of d..i.

worrn wheel ,and planetaryr,driving connec member anddriving mechanism therefor ineluding a worm rotatable upon a vertical axis and in a directionoppositefto the direc tion .of rotation of said drivlng gear, a

worm wheel driven by sa id worm andjfriction clutch mechanism coaxial with said worm wheel.

A r om a p ll rs= ining,:m h q dmg r m to l m gtsa ma i esha t i g a an axi e tendin ongitudin ly.

of the ,machine, cutting I mechanism includ i .ing. a cutter chain driving sprocket, a driving gear therefor coaxial; therewith, and

mechanis m driven by SillClQinOtOlLfOl' feeding said machine bodily laterally along the;

mine face including a feedoperatin ea ber rotating on a transverse ax s arid ing mechanism therefor including a Worm rotatable upon a vertical axis andinlfa direction opposite to the direction of rotation of said driving gear, a Wormjvheel ,rotatingon a parallel transverse axis driven' by said worm, and friction, clutch mechanism coaxial withsaid worm wheel.

ture sha ft," a driving pinion k carried thereby, a shaft carryinga gear dr ven by sa d dr w ing pinion and also carrying and rotating,

therewith in'fixed angularrelation thereto,

. s aft. e ga es.

9 mm e n a w tea ea fla id will e?! in spro ket-d wingrg am fv idiworm i 9 y p wer a, a *a qtqr; q g..= .,a driving pinio n. i. a mature: aft, .f a a zre shin e ii uditm are--.. y, T? ,5 eitflon l h -rs il-.l $t;} 1 en i mqd. g arj fi eaiax q mro -said S ahn ge"- I said, W e- W swa man qawdi lh fia; i g sa' iqutt r.,c 1it nnspr k t r v n mg' rrm l .a' rma,b i et aa the gear'anf ,pin ipn gn i 71. A room and. pillai f,mining,,machine e aa mates-h ing matis a t rotatable on, ,an axisgextnding. longit u di,-,;z l y efm'a h negcutt nga echaiii m .7

including; c tt r sh n driain'gttspr cke w fa d i ng g ar t re .an-x axi lpth r w th,. i ed ngbmqliaii snt ppi ec n krs iila: chine ldi y;.l tes ellx-rta ana} a i ae..-.,

di ra edfe emti ie s eek r W m h el a d; rp aneta ixdfl mg ma t nsa b tw en-said;worm w eelran. i i 'eper r hmcmb rne uding a p i ra ityt o b y-* q mgears. nd, p ur lity p my a fiiiial i amma ich io bit lly... qyi g, gear mesh, f ic onal- 111. lling a eansi ropmt re i respe tive of the. et e pe atipa 79 .s d. mamm ry driving connections ,to interrupt the drive; v ver Qad,.. 3M1: msel w gl fiatit gt s d. er, chain driying ,spr c, getj d iving gear ,f 1 l5 d .s id wormfwh slji y,.pqwer, -fr mgs id m Qr l inaa 1 Y ngLP 1i @i ts i armature; shaft, gear Imeshing therewith; and drive-n thereby a shaft on fivhiq saidh x tioaedrg rii fix d, a m q -t 'sa'idvgworgnnwheel anda pinion s aid s l1aft,engag;ng said cutter .chain ivi .sprpsk t d mgi ean a worm anda driving. pinion, cutting meclr anism including a cutter chain driving,

sprocket driven by'said last mentioned driving pinion, and feeding mechanism includ mg a worm wheel drivenby said worm, a

72. In a mining me0hanism,;. a frame. ca1'1 'y ing in ,rigi c l relation thereto r vduri mg ng. a l ln dma b'i .r-pr a t gi u t a 4 r, a QtQK- s icli aniei t rl a n carried by said cutter, bar, chain, driving? 

